vs
6.8Battery4.8
Why is Sleepbuds II better than RZ-S30W?
- Battery life10 h vs 7.5 h+33%
- Earbud weight (each)2.3 g vs 4 g+76%
Why is RZ-S30W better than Sleepbuds II?
- Charging time6 h vs 2 h3×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 6 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | No | — |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 10 h | 7.5 h |
| Charging time | 6 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5 |
| Bluetooth codecs | — | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| USB-C | — | Yes |
| Design & build | ||
| Earbud weight (each) | 2.3 g | 4 g |
| Protection rating | — | IPX4 |
| Water resistance (IPx) | — | IPx4 |
| Colours | White | — |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
